The present disclosure relates to a display device, a touch panel and a manufacturing method thereof. The touch panel includes a substrate and a touch layer. The touch layer is disposed on a side of the substrate, and includes a first touch area and a border area surrounding the first touch area. The border area includes at least one second touch area, the second touch area includes a plurality of button portions. The button portions include at least one mutual-capacitance button portion, and the mutual-capacitance button portion includes a first touch electrode, a second touch electrode, and a dummy electrode disposed in a same layer, and there is a gap between the first touch electrode and the second touch electrode. The dummy electrode is disposed in the gap between the first touch electrode and the second touch electrode, and separated from the first touch electrode and the second touch electrode.